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Spartan-6 Block RAM - 9Kb Block RAM SRVAL/INIT Values Incorrect for Parity Bits

AR# 34803

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Topic Block RAM
Last Updated 05/26/2010
Status Active
Description

SRVAL and INIT values may not be properly set for the 9K Block RAM parity bits.

Solution

Description:
The parity bits SRVAL and INIT values are not being set properly for Spartan-6 FPGA 9k Block RAM when the DATA_WIDTH = 9.

Affected components:
RAMB8BWER when the DATA_WIDTH is set to 9

Software Behavior:

  • Behavior in ISE Design Suite 11.5 and earlier: The parity bit in 9-bit mode may have incorrect SRVAL and/or INIT programmed.
  • Behavior in ISE Design Suite 12.1 and later: This will be fixed in this version of software.  SRVAL and INIT values will be properly set.

Workaround:

There is no workaround at this time.

Applies To

Devices

  • Spartan-6 LX
  • Spartan-6 LXT

Design Tools

  • ISE Design Suite - 11.1
  • ISE Design Suite - 11.2
  • ISE Design Suite - 11.3
  • ISE Design Suite - 11.4
  • ISE Design Suite - 11.5
 
 
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